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发明名称
摘要
申请公布号
JPS52161972(U)
申请公布日期
1977.12.08
申请号
JP19760071231U
申请日期
1976.06.01
申请人
发明人
分类号
H01J61/33;(IPC1-7):H01J61/33
主分类号
H01J61/33
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